DEPUE, Ill. (AP) — The U.S. Environmental Protection Agency has issued an administrative order to those responsible to clean up contaminated soil at a site near the northern Illinois town of DePue, where a zinc smelter and fertilizer plant was once located.

The city of DePue on Tuesday announced the issuance of the order by the EPA to TCI Pacific Communications and CBS/Westinghouse.

The order requires what the EPA calls “potentially responsible parties” to clean up a portion of the New Jersey Zinc/Mobil Chemical Corp. site. The site is contaminated with elevated levels of zinc, lead, arsenic, cadmium and other metals.